RV Investigator Voyage IN2017_V04 SBP120 Sub-bottom Profiler Data

This record describes sub bottom profiler data collected on RV Investigator voyage IN2017_V04, 'The whole enchilada: from production to predation in Tasman Sea ecosystems' which departed Brisbane on the 31-Aug-2017 and returned to Sydney on the 18 September 2017.The Kongsberg SBP120 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution.The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged [continuously/sporadically] for the extent of the voyage.Data are stored in *.raw (59 files 5.36 GB) raw and *.seg (58 files 5.48 GB) segy formats at CSIRO.The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping, an attribute calculation for instantaneous amplitude and time variable gain.Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request

本记录记述的是“调查者号”（RV Investigator）航次IN2017_V04的海底剖面仪采集数据，该航次主题为“完整生态图景：塔斯曼海生态系统从初级生产到顶级捕食的全过程”，于2017年8月31日从布里斯班启航，2017年9月18日返回悉尼。本次数据采集采用康士伯（Kongsberg）SBP120型海底剖面仪（sub bottom profiler），该设备可获取包含海底下方不同沉积界面镜面反射信号的数据集。SBP120的角分辨率为3°×3°，其回声测深模块的扫频范围为2.5 kHz至7 kHz。在整个航次期间，SBP120以[连续/间断]模式完成数据记录。本数据集的原始文件存储于澳大利亚联邦科学与工业研究组织（CSIRO），包含*.raw原始格式（共59个文件，总容量5.36 GB）与*.seg SEG-Y格式（共58个文件，总容量5.48 GB）两种格式。其中SEG-Y格式数据经过实时处理流程，该流程包含增益施加、增益校正、带副本整形的匹配滤波、瞬时振幅属性计算以及时变增益处理。本数据集的更多详细信息收录于GSM数据采集与处理报告，额外数据产品可按需申请获取。